My best is probably the same 050510 NE sup that H posted, and naturally his is a better pic, so I offer these for your amusement instead:
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That one was the 030628 Liberal KS storm. I was sitting there taking the vid, and the wc was only about a hundred yards from me. I don't normally get so close, but storm motion was WSW, as I remember, and I was positioned ESE from the wc. Anyway, the inflow was rocking the back of my car up and down violently. If it had gotten much stronger, maybe 20kts, it would have just about lifted the rear wheels off the ground.
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That one was the somewhat "disputed" 040419 Perryton wedge that David D and I chased. Both of these are vidcaps, and are lightning illuminated, because, well, it was after sunset!
Bob